Alex R. Tan, OD
Optometrist · Oak Park, IL
Alex R. Tan, OD is an optometrist with a practice address in Oak Park, Illinois, and NPI 1215921655, issued on Aug 31, 2005. Check the license (Illinois 046009172, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alex R. Tan
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 046009172 IL
Self-reported in NPPES; status is on the state search - Practice location
- 603 Madison St, Oak Park, IL 60302
- Phone
- (708) 383-2150
- Enumerated
- Aug 31, 2005
- Record last updated
- Feb 6, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 046009172 IL
- Medicare enrollment
- Enrolled (PECOS I20100113000895); accepts Medicare assignment
- Medical or professional school
- Illinois College Of Optometry At Chicago, 1999
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,697 in Illinois → Look up another NPI →
Also registered at 603 Madison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Albert Licup, O.D.Optometrist1720011125
Verify Alex R. Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 046009172Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average optometrist in 2024
124 Medicare Part D claims for 23 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 56% of claims.
Most prescribed
- Latanoprost29 claims
- Lumigan15 claims
- Cyclosporine14 claims
- Timolol Maleate11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,671.22
20 payments; by number, the most common kind was food and beverage; the largest payer was Johnson & Johnson Vision Care, Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Illinois College OF OptometryChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alex R. Tan among 2,697 optometrist records in Illinois
Alex R. Tan, OD is one of 2,697 optometrist records with a practice address in Illinois. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated1999 · median 2008 among the 1,513 with a school on file
- Record last updated2013 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in Illinois
There are 2,697 optometrist records in Illinois.
All 2,697 in Illinois → Every provider in Oak Park → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Barry Blattberg, ODOak Park, IL 603021083734206
- Zehra Jafferi, ODOak Park, IL 603021659702678
- Albert Licup, O.D.Oak Park, IL 603021720011125
- Ramsey Tanakatsubo, ODOak Park, IL 603021013940667
- Courtney BeasleyOak Park, IL 603011780176065
- Michael Bowker, ODOak Park, IL 603011164418273
- Jennifer Dunne, ODOak Park, IL 603011710393152
- Jamie Hahm, O.D.Oak Park, IL 603011598928020
Common questions
What is Alex R. Tan, OD's NPI number?
Alex R. Tan, OD's National Provider Identifier (NPI) is 1215921655, issued on Aug 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Alex R. Tan, OD located?
The NPPES record lists a practice address at 603 Madison St, Oak Park, IL, 60302. Phone: (708) 383-2150. Providers update this record themselves, so call before visiting.
How can I verify Alex R. Tan, OD's license?
NPPES lists Illinois license number 046009172, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Alex R. Tan, OD prescribe under Medicare Part D?
In 2024, Alex R. Tan, OD had 124 Medicare Part D claims for 23 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.